Vertical video (9:16), First-person POV, photorealistic, 4k, handheld camera movement, realistic night lighting, authentic texture. Vertical POV video, tech review style. Looking down at a pair of hands holding a sleek, black metallic flashlight over a wooden desk. The thumb presses the rubberized button explicitly. 1. High beam (blinding white light). 2. Low beam (warm light). 3. Side-lantern mode (panel lights up). The user then rotates the flashlight to reveal the USB output port, plugs in a cable, and connects a phone lying on the desk. Close-up on the phone screen showing the battery percentage increasing. High definition, sharp focus on textures.